Improvement in chasing-mills



C. MOORE.

Ore Mill.

Patented May 18, 1858.

M PEYERs. Photo-Litho raph". Wnhingmn. D. c.

UNITED STATES PATENT OFFICE.

CHARLES MOORE, OF TRENTON, NE\V JERSEY.

IMPROVEMENT IN CHASING-MILLS.

T0 (0Z6 whom it may con/corn.-

Be it known that I, CHARLES Moons, of Trenton, in the county of Mercerand State of New Jersey, have invented certain new and usefulImprovements in Chasing-Mills for Grinding Reeds and other Articles andI do hereby declare that the same are described and represented in thefollowing specifications and drawings.

To enable others skilled in the art to make and use'my improvements, Iwill proceed to describe their construction and operation, referring tothe drawings, in which the same letters indicate like parts in each ofthe figures.

Figure 1 is a top view of a chasing-mill with myimpro'vements. Fig. 2 isan elevation of the same. Fig. 3 is a section through the line z ofFig. 1. Fig. l is a plan of the bottom of the bed.

4 The nature of my improvements consist, first, in making a chasing-millself-feeding automatically and continuously by means of one or morecircular troughs which receive the substances to be ground or acted uponand deliver them through spouts on to the bed of the mill under thechasing-wheels; second, in a revolving scraper so constructed, arranged,and operated as to separate automatically and continuously that portionof the material on the bed of the mill which is ground most from thatwhich is ground less and deliver it into the discharge-opening in thebed of the mill, and, lastly,in comblning with the above-mentionedautomatic continuous self-feeding and self-discharging apparatus aheated bed, so as to heat, grind, mull, and mix the materials fed to themill automatically at the same time and in one operation without manuallabor.

In the aceompanyin g drawings, A is the bed of the mill, made of castiron, and consists of a circular plate or bottom 15, Fig. 4-, whichshould rest on a solid foundation A of some kind of sul'ficientstrength. to support the mill. Thisbottonl I has a holein the center,surrounded by the hub G, from which a series of partitions I) I)radiate, extending nearly to the edge except I), which extends to theedge, and there are also a series of partitions D extending from theedge nearly to the hub 0, arranged alternately between the partitions DI), all of which partitions support the bed A, which rests upon them,and is provided with a hole in the center corresponding with the hub C,and that portion of it which the chasing-wheels E E roll upon isprovided with V-shaped scores F F, about one-fourth of an inch deep andthree-eighths wide at the end toward the center and threefourths of aninch wide at the outer end. These scores F F are curved, and cross eachother nearly at right angles and form pyramidal shaped protuberancesbetween themselves which may be brought to a point or nearly to a point,which protuberances are designed to prevent the substances acted upon bythe mill from slipping forward under the wheels, so as to escape withoutbeing properly acted upon and ground or mulled.

The bed A and bottom 13 are surrounded by a hoop G, so arranged as tocover the ends of the partitions D and form a steam-tight joint aroundthe bed and bottom, and make a chamber which is supplied with steamthroughthe hole II in the bottom, and after passing around between thepartitions D and D and heating the bed A uniformly it escapes throughthe hole ll. on the opposite side of the partition D. The hoop G or asimilar one should be made to extend a sufficient distance above the bedA to form a curb G to prevent the substance ground from falling 011' theplate as it is swept around by the sweep I, which sweeps orscrapes itinto the opening J, through which it falls into the receptacle preparedto receive it. The opening J is made through the bed and bottom, andseparated from the steamchamber by the partition J, and is provided witha door J to close it. The bedAand bottom B may be cast separately andfitted together, and rims may be cast upon them to answer instead of thehoops above mentioned,

which rims may be provided with flanges, so as to bolt them together andmake a steam-tight joint; but I have succeeded in making them by castingthe bed, partitions, and bottom all in one piece, and shrinking on astout wrought iron hoop wide enough to cover the space between the bedand bottom and lap onto each, so that the seams can be calked to make asteam-tight joint.

To make the curb I take a strip of stout sheet-iron, long enough toreach around the bed, and rivet some hasps to each end on the outside,so that when it is applied to the bed a tapering key can be driven intothe hasps, which will draw it so tight around the bed as to fix itfirmly in its place without additional fastening. The vertical shaft Kshould .be provided with a pivot at the lower end, fitted to turn in abox in or below the hub O, and the upper end of this shaft shouldbefitted to turn in a box supported by a girder of the building in whichit is operated or by strong frame-Work adapted to the purpose, and agear wheel or pulley should be applied to this shaft at or near theupper end, to which the power may be applied to turn it and operate themill. The axle K passes through the shaft K, so as to allow thechasing-wheels E E to accommodate themselves to the thickness of thematerialbein g ground under them on the bed A. The chasing wheels E Eturn on the pivots L L of the axle K, and one arm of the axle is longerthan the other, so that one wheel will not run exactlyin the track ofthe other. These chasing-wheels may be made of sand or grit stone,bushed with wood or metal, so as to turn freely on the'pivots L L as theshaft K is turned to roll them around on the plate or bed Ato performthe grinding.

In order to feed the mill continuously and automatically, I make acircular trough N' around the shaft K, into whi'chthe crushed linseed isfed by a trough to'supplythe mill, and it passes'down through the spout0 into the bed A, so as to feed the mill constantly and uniformly, andit is forced out under the chasing-mill. These troughs N and R may bearranged at such distances from the shaft as may be desirable, and thebottoms of these circular troughs may be made to rise spirally I in oneor both directions from the opening into the spout, so as to deliver thecrushed seed uniformly around the bed of the mill. The rods T T arearranged so that they can be traversed in the shaft K to adjust thesweep or scraperl, which is fastened to them, which scraper may be setso as to separate that portion of the prepared pulp which is ground mostand worked out by the wheels from that which is ground less at eachrevolution, and the portion so separated is swept around by the outerarm of the scraper and falls into the opening J mulled, heated, and moreperfectly prepared'for the press than it has ever-been done by any othermill or'process. The rear end of the scraper I is set in toward theshaft, so as to scrape the pulp which is'not separated asabove mentionedin toward the center, so that the wheels will pass over itagain.

It is found to be a great advantage to mull and temper the crushed seedon a hot plate and supply water at the same time, as the heat promotesthe chemical affinity between the water and the starchy portion of theseed, thereby precipitating or releasing more of the oil than'any othermethod. Besides, the oil is far more easily expressed from the pulp thanwhen it is prepared in any other way.

By making themill automatically self-feeding and automaticallyself-delivering, the labor of filling and-discharging the millby hand issaved,and the pulp is more uniformly and far better prepared anddelivered all ready for the press or for packing, and one mans labor issaved entirely who has heretofore been employed. to put in and takeoutfthe pulp, supply the water, the. By making the mill to feed anddischarge itself continuously,

enumerated as follows: First,'it is heated'al-l over'witha uniformtemperature; secondly,

there is no danger of its being heated so'liot 'asto scorch or burn thepulp or dry it by evaporating all the water that is "put in with it tomoisten the starch ;'thirdly, theh'eatiiig is done entirely withoutmanual labor, consequently is not attended with anyfadditional expense;fourt'nly, the mill is not delayed-by stopping to remove the crushedseed, as 'in the old method; -fifthly, the crushed seed is supplieduniformly under the wheels, so that they act upon it to advantage,besides they turn easier than if the crushed seed were spread by handunder them with less uniformity than when it is spread automatically.

\Vith my improvements the millinay'run constantly without interruptionor delay, and do a far greater amount of work and do it far better, andat the same time dispense with one'mans labor.

I'believel have described and represented the improvements which Ihave-made in chasing-mills so a'sto enable any person skilled in the artto make and use them. I willnow state What I desire to secure by LettersPatcut, to wit:

rial on the bed of the mill which is "ground most automatically andcontinuously'from that'which is ground less and'deliverit to thedischarge-opening in the bed of the mill, to the mill automatically orwithout manual substantially as described.

In combination with a continuous automatic self-feeding apparatus or acontinuous automatic self-delivering apparatus applied \Vitnesses: to achasing-mill, a heated bed, so as to heat. grind, mull, and mix thematerials supplied labor at one and the same time, as described.

CHARLES MOORE.

SMITH L. SOUDDER, WM. 0. HOWELL.

